if a machine, a vehicle, a place or an activity is unmanned, it does not have or need a person to control or operate it 无(需)人操作的;无(需)人控制的;自控的 an unmanned spacecraft 无人驾驶宇宙飞船 an unmanned Mars mission 无人火星探测
Oxford Collocations DictionaryUnmanned is used with these nouns:- aircraft
- mission
- spacecraft
- …